He claimed the university had failed to offer Hannah adequate support in the aftermath of the assault and that Staffordshire Police had been slow to investigate.

Speaking on behalf of Hannah’s parents Paul and Amanda, he said the alleged attacker should have been suspended from the university.

Grandfather Mr Stubbs said: ‘I am at a loss to understand why that did not happen at Keele. If it had, Hannah might have returned to her course and still be alive today.

Hannah had been studying physiotherapy

Before going into higher education, Hannah had been a student at private school, St Dominic’s Priory.

But she had been unable to return to her physiotherapy course since the attack.

Hannah’s mum announced her death on Facebook.

She wrote: ‘It is with great sadness that we announce that our beautiful girl Hannah died at home on Saturday evening following a long period battling depression. We wanted to give her the world, but now God has given her heaven.’

A Staffordshire Police spokesman said: ‘Since we were made aware of an allegation of a rape, specially trained officers have been conducting an investigation into the incident.

‘This included referring Hannah for counselling support whilst the investigation progressed.

‘A suspect was questioned by detectives and a file was compiled for consideration by the Crown Prosecution Service for a charging decision.

‘A report on the circumstances of Hannah’s death will be made for Her Majesty’s Coroner.’

A Keele University spokesman said the institution was ‘deeply saddened’ to learn of Miss Stubbs’ death’.

He added: ‘The university considers the circumstances of each case, and in developing appropriate support provision, works closely with the relevant authorities and professional support agencies including medical services.’

For confidential support and advice call Samaritans on 08457 90 90 90.